Door-spring



(No Model.)

J. H. DAVIS.

DOOR SPRING.

No. 395,383. Patented Jan. 1, 1889.

FIG-1.

v FIG-2.

, FIGJ3;

-FIG-.5.

:IIIIIWT'" v llllllmmlll ||m II UNiTEn STATES PATENT OFFICE.

J ()IIN II. DAVIS, OF (IOVINGTON, KENTUCKY.

DOOR-SPRING,

SPECIFICATION forming part of Letters Patent No. 395,383, dated. January 1, 1889.

Application filed May 14, 1888, Serial No. 273.854. (N0 model.) i

To aZZ whom "it may concern:

Be it known that l, JOHN II. Davis, a citi-- zen of the United States of America, residing at (Tovington, in the county of Kenton and State of Kentucky, have invented certain new and useful Improvements in Door- Springs, of which the following is a specification, reference being had therein to the accompanying d rawin This invention relates to those springs whose free ends bear against plates secured to doors or gates, the opposite ends of the sprin being coiled around tension-adjusting pins, which latter are fitted within lugs or ears projecting from plates attached to supporting posts or frames; and my improvement comprises a specific combination of devices for locking the gate or door when thrown wide open. Said combination includes the bearin g-plate,a swinging fastener coupled thereto, and an upward extension. or head of the tension-adj ustin g pin, with which head said fastener is (mg-aged when occasion requires, as hereinafter more fully described.

In the annexed drawings, Figure 'l. is a front elevation showing my improved spring applied to a door or gate, the latter being closed. liig. 2 is a sectionized plan. ol said s1i ring,tl1e gate or door being thrown wide open. and locked by the hook. Fig. 3 is an enlarged vertical section through the coil of the spring and its accessories. Fig. -l: is an enlarged horimmtal section through the pin to which the coil. of the spring is ai'iachod. Fig. represents a modification ol. nrpinvcntion.

A represents a post or frame or other simi* lar support to which a gate or door or other swinging appliance, l), is hinged, as at (1. Secured to this post is a plate, I), having a pair ol l'o'rwan'lly-projecling ears or lugs, E 1!), of. which projections the upper ear, E, has a hexagonal or other ,ll()ll.-(')ll'(.-lll;l,l' orifice, while the lower ear, E, is pierced with a circular hole, e, traversed by the smooth cylindrical shank l of a pin, (3i, tholatterbeing provided with a reduced portion. or neck, I]. Pin G terminates at top with a hexagonal. or other non-circularhead, I,which normally fits within the orifice c.

as guides for this bend.

.I is a spring, the free end of which has a bend, j, the opposite end of said spring being formed into a coil, K, that terminates with a square eye, 7;, adapted to fit snugly around the pin G, as more clearly seen in Fig. 4. Bend j at all times in contact with a bearing-plate, Ii, secured to the gate or door 13, the opposite edges of said plate being preferably provided with flanges Z i, that serve Pivoted or otherwise coupled to the upper flange, Z, is ahook; link, shackle, or other fastener, M, adapted to engage with the pin-head I, as seen in Fig. 2. This fastener is normally turn ed back so as to rest upon the flange Z, as seen in Fig. 1, thereby leaving the spring J at liberty to close the gate B, which gate can be readily opened at any time by exerting sufficient force to overcome the tension of said spring; but when .it is desired to lock the gate in an open position the fastener M is simply swung around horizontally and its free end is engaged with the head I, which head projects a sufficient distance above the in E to permit the ready i engagement of said fastener. This head,however, is pulled up, as indicated by the dotted lines in Fig. 3, pre )aratory to regulating the tension of the spring, which vertical pull brings the neck lI l'airly within the orifice 6, thereby permitting the pin G to be turned either to lhe right or left, so as to increase or diminish the stiffness of coil K. Alt'ter the coil has been properly adjustml the pin is restored to its original. position, at which moment the non-circular head I engages with tho min-circular orifice e, and thus prevents accidental turning of said pin in either direction; finally, a roller, N, (seen in Fig. 5,) may be applied to the free end of spring J, tln-u'eby dispensing with the bend I am aware that gate and door springs havin g their coiled. ends attached to tension-adj ustin g pinsare seen in the patents 0t Tucker, No. 91,184.; Randall, No. 209,713, and Carrier, No. 321,04 'lherclore my claim is not to be construed as an attempt to coverthese springs; but the invention is expressly limited to the combination of devices forlocking the gate or door when thrown wide open, as herein described.

I claim as my invention said pin when the door or gate is thrown Wide In combination with a spring having its open, as herein described. 10 free end in contact with a bearing-plate se- In testimony whereof I affix my signature in cured to a door or gate and its opposite end presence of two witnesses. 5 coiled around a tension adjusting pin at JOHN ll. DAVIS.

tached to a plate projecting from a post or \Vitnesses: frame, a swinging fastener coupled to said JAMES H. LAYMAN,

bearing-plate and engaged with the head of I SAML. S. CARPENTER. 

